It is information received from surveys of purchasing managers regarding the industries associated with the service sector. Readings below 45-50 tell about reduction in economic development. PMI Index is often influenced by emotion factors, rather than the actual situation. The process of services consumption tends to change at a relatively constant rate, therefore sharp changes in this index value are caused precisely by emotion factors. PMI UK has limited forex market influence, but at critical point can become a very important leading indicator. A value increase of this index leads to the UK pound rate growth. The data on PMI (CIPS Services Index) is published on the next day after publishing of PMI Index (CIPS Manufacturing Index) UK.